# Copyright (c) 2021 SUSE Software Solutions Germany GmbH.  All rights reserved.
#
# This file is part of kiwi-boxed-build.
#
# kiwi-boxed-build is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# kiwi-boxed-build is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with kiwi-boxed-build.  If not, see <http://www.gnu.org/licenses/>
#
import requests
import progressbar
import requests.packages.urllib3


class FetchFiles:
    """
    **Fetch File Manager**

    Fetches file(s) from a given URL to the local system
    """
    def __init__(self) -> None:
        requests.packages.urllib3.disable_warnings()

    def wget(self, url: str, filename: str, chunk_size: int = 4096) -> None:
        """
        Download content of given url to filename

        :param str url: URI
        :param str filename: local file path name
        """
        response = requests.request(
            'GET', url, stream=True, data=None, headers=None
        )
        widgets = [
            'Loading: ', progressbar.Percentage(), ' ',
            progressbar.Bar(marker='#', left='[', right=']'), ' ',
            progressbar.ETA(), ' ',
            progressbar.FileTransferSpeed()
        ]
        progress = progressbar.ProgressBar(
            maxval=int(response.headers.get('Content-Length') or ''),
            widgets=widgets
        ).start()
        processed = 0
        with open(filename, 'wb') as data:
            for chunk in response.iter_content(chunk_size=chunk_size):
                if chunk:
                    data.write(chunk)
                    data.flush()
                    processed += len(chunk)
                    progress.update(processed)
        progress.finish()
